linux中用iptables开启指定端口 |
您所在的位置:网站首页 › linux怎么打开ssh端口 › linux中用iptables开启指定端口 |
centos默认开启的端口只有22端口,专供于SSH服务,其他端口都需要自行开启.
1.修改/etc/sysconfig/iptables文件,增加如下一行:
-A INPUT -m state --state NEW -m tcp -p tcp --dport 10000 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 10000 -j ACCEPT
重启 iptables service iptables restart 2.重启防火墙,这里有两种方式重启防火墙 service iptables start 3.或者用menu-system-administration-firewall ,去添加用户需要的端口。By the way: a. netstat -tanp 去显示端口状态。 /usr/sbin/lsof -ib. telnet ipaddr port to check if ip and port is available before making connection.参考 4.LINUX通过下面的命令可以开启允许对外访问的网络端口: /sbin/iptables -I INPUT -p tcp --dport 8000 -j ACCEPT #开启8000端口 /etc/rc.d/init.d/iptables save #保存配置 /etc/rc.d/init.d/iptables restart #重启服务 /etc/init.d/iptables status # 查看端口是否已经开放 5.Linux中如何开启8080端口供外界访问1.修改文件/etc/sysconfig/iptables [root@bogon ~]# cd /etc/sysconfig/ [root@bogon sysconfig]# vi iptables文件内容如下,倒数第三行是新加的,目的是对外界开放8080端口 # Firewall configuration written by system-config-firewall # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :RH-Firewall-1-INPUT - [0:0] -A INPUT -j RH-Firewall-1-INPUT -A RH-Firewall-1-INPUT -i lo -j ACCEPT -A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT -A RH-Firewall-1-INPUT -p 50 -j ACCEPT -A RH-Firewall-1-INPUT -p 51 -j ACCEPT -A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT -A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT -A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 21 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 443 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT这行文字实际是从上一行拷贝修改而来,在VI中拷贝一行用yy,拷贝多行用yyn,粘贴用p。还算方便的。 2.将iptables服务重启。 [root@bogon sysconfig]# service iptables restart Flushing firewall rules: [ OK ] Setting chains to policy ACCEPT: filter [ OK ] Unloading iptables modules: [ OK ] Applying iptables firewall rules: [ OK ] Loading additional iptables modules: ip_conntrack_ftp [ OK ] [root@bogon sysconfig]#3.如若不想修改iptables表,可以直接输入下面命令: iptables -I INPUT -p tcp --dport 8080 -j ACCEPT # linux iptables开放端口命令参考 |
今日新闻 |
推荐新闻 |
CopyRight 2018-2019 办公设备维修网 版权所有 豫ICP备15022753号-3 |